3138408465 has 16 divisors (see below), whose sum is σ = 5033448000. Its totient is φ = 1669819712.

The previous prime is 3138408461. The next prime is 3138408517. The reversal of 3138408465 is 5648048313.

It is a cyclic number.

It is not a de Polignac number, because 3138408465 - 2² = 3138408461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3138408461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243390 + ... + 255959.

It is an arithmetic number, because the mean of its divisors is an integer number (314590500).

Almost surely, 2^3138408465 is an apocalyptic number.

It is an amenable number.

3138408465 is a deficient number, since it is larger than the sum of its proper divisors (1895039535).

3138408465 is a wasteful number, since it uses less digits than its factorization.

3138408465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499776.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 3138408465 is about 56021.5000245441. The cubic root of 3138408465 is about 1464.0969036719.

The spelling of 3138408465 in words is "three billion, one hundred thirty-eight million, four hundred eight thousand, four hundred sixty-five".